Doping dependence of the anomalous Hall effect in La1-x Srx Co O3

Y. Onose, Y. Tokura

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54 Citations (Scopus)


The anomalous Hall effect has been studied for single crystals of La1-x Srx Co O3 (0.17≤x≤0.30). The Hall conductivity for x=0.3 is proportional to the magnetization, which is consistent with the Kaplus-Luttinger theory. At the lowest temperature, it shows the highest reported value among transition-metal oxides (165 Ω-1 cm-1). For the lower doping crystals, by contrast, the Hall conductivity shows a downturn with decreasing temperature, being distinct from the temperature dependence of the magnetization. In particular, the Hall conductivity for x=0.17 shows a sign change around 50 K. The negative component of the Hall resistivity seems to be related to the glassy nature of the magnetism in this doping region.

Original languageEnglish
Article number174421
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number17
Publication statusPublished - 2006


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